Sectional brush assembly



July 5 L. MUNDO I 2,645,802

" stc'rxoml. BRUSH ASSEMBLY iled Nov. 19, 1949 INVENTOR- Manda Patented July 21, 1953 UNITED STATES PATENT OFFICE SECTION'A'L BRUSH ASSEMBLY Louis- J. Mundo, Chicago, Ill.

Application November 19, 1949', Serial No. 128,426

9'Claims.- (01. 181 I The present invention relates to brush assemblies and is concerned primarily with that type of brush assembly which is used in car washing.

At the present time it is common practice to assemble a plurality ofspl-it brushes on a shaft for car washing purposes. Each brush comprises bristles which extend from a core which is formed as two complemental halves each having a semicircular recess which receives the shaft. These halves are clamped to the shaft by bolts. This arrangement presents certain features of disadvantage in that considerable difficulty is experienced in assembling the brushes on the shaft and also in replacing any brush elements which might become worn or damaged.

The present invention has in view as its foremost objective the provision of a brush assembly of the type indicated which consists essentially of the usual shaft and brush halves, together with plates and collars which maintain the brush elements in an assembled position on the shaft.

In more detail, the invention has as an object the provision of a brush assembly of the typeindicated in which the end faces of the brush cores are formed with small openings or recesses. Ring-like plates are mounted on the shaft and outstanding from-- the opposite-faces of or these plates are pins whichare received in the openings on the end faces of the core elements.-

Thus, these plates, with the interlockingpins.

serve to maintain the brush halves assembled on the shaft.

Still. another object of the invention is to provide, in a brushassembly of the type indicated; a pair of end collars whichare located at the opposite ends of the assembly. Each of these collars carries inwardly extending pinswhich are received in complemental openings in the cores of the outermost brushes and each collar is provided with means for holding the sameagainst longitudnial movement on the shaft. This means may take the form of one or more set screws;

Still another object of the invention is to provide, a brush assembly of the type indicated, a shaft, together with collars and plates of the character aforesaid, which are formed with com plemental keywa-ys. Keys pass through these keyways and serve to establish a non-rotative relation between the shaft and the collars and plates. These keys also cooperatewith the brush halves to establish a driving relation between the fied form of means for holding the brush halves assembled on the shaft. In this form of the in- 2 ventlon the ring-like plates are replaced by U- shaped holding elements, each of which has a paired legs that fit in oppositely arranged open- I ings in the core elements of the brushes.

Various other more detailed objects and advantages of the invention, such as arise in connection with carrying out the above noted ideas in a practical embodiment, will in part become apparent and in part be hereinafter stated as the description of the invention proceeds.

The invention therefore comprises a brush assembly that is intended for use in car washing and which consistsessentially of a shaft, 2. pair of end collars on said shaft, and a plurality of brushes arranged between the end collars. Each brush-comprises a pair of complemental halves having 'core elements formed with recesses on their end faces. Each of'the end collars carries inwardly extending pins which are received at the recesses on the outermost faces of the brushes at the opposite ends of the assembly. Between adjacent brushes additional holding means are employed. This holding means preferably takes the form of a ring-like plate having pins pr'oject-' ing from the opposite faces thereof and which pins are receivedin the openings in the core elements.

In a modified form of the invention, U-shaped holding: elements are employed in place of these plates. The face, collar and plates are formed with complemental keyways which receive" keys about which the brush halves are assembled to establish a nonrotative relation between the" shaft and the brushes.

For a full and more complete understanding of the invention, reference may be had to the following description and accompanying drawing, wherein Figure 1 is an elevational view of a brush as sembly as designed in accordance with the precepts of this invention.

of illustration of one of the collarsand one of the plates.

Figure 2 is a transverse section taken about on the plane represented by the line 2-2 of Fig ure Figure 3 is a view in side elevation of one" of theendcollars per se.

Figure 4 isan elevation taken as an outside end view of the collar shown in Figure 3.

Figure 5 isan end elevation showing one of the plates, which is arranged between adjacent Y Figure 6- is a view in side elevation of the plate shown in Figure 5; and

In this view, certain parts of the brushes are broken away to permit core elements l2 and I 3 are ordinarily made of wood or comparable material and the end face of each core element is formed with a plurality of small openings or recesses 14. 7

The shaft I is formed with. a pair ofkeyways ii at diametrically opposite 'p'ointsand' received in each of these keyways is a key I6. Each of the core elements l2 and i3 is' formed at diametrically opposite points with a corner-shaped notch H which accommodates and receives the key l6 when the brushes B are assembled on the shaft in.

The brushes B are embraced between a pair of end collars i8 and I9. These collars l8 and [9 are of substantially identical construction and only one of them is herein described in detail for the purposes of this specification.

Referring to Figures 3 and 4, the collar I8 which is therein illustrated will be described. This collar [8 is formed with a bore 20 which snugly receives the shaft l0. Communicatin with the bore 20 are a pair of diametrically opposed keyways 2| which are arranged opposite to the keyways in the shaft and which receive the keys IS. The collar I8 includes a hub portion 22 which is formed with a plurality of threaded openings represented by the broken lines at 23 in Fig. 4 and each of which receives an Allen setscrew as shown at 24 in Figure 1. of these openings 23 preferably communicates with one of the keyways 2!, as illustrated in Figure 4, and the inner end of the setscrew 24 will then engage the outer edge of the key l6.

Outstanding from the hub 22 at one end of the collar [8 is a circular flange or enlarged portion 25 having an inner end face at 26 from which.

project a plurality of pins 21. The pins 2.1.on the collar I8 are received in theopenings II on the outer end faces of. the core elements of the brush which is located at that end of the assembly. In a similar manner the pins 21 on the 1 collar l9 are received in the openings 14 on the brush B at the other end of the assembly.

Between the adjacent ends ofeach pair of brushes B there is a holding plate 28; One-0fthese holding plates is illustrated in detail in Figures 5 and 6. Each holding plate 28 hasa bore 29 which receives the shaft l0. -Communicating with this bore 29 are a pair of diametrically opposed keyways 30 which are complemental to the keyways l5 in the shaft 10 and which description of the parts given, it may be briefly outlined by noting that one of the end collars ill or [9 is first positioned on the shaft [U with the The Allen setscrews 24 are then tightened to lock this 76 keys [6 being received in the keyways 2|.

One 1.

end collar in position. A brush B is then assembled about the shaft and slid up in abutting relation within the end collar so that the openings l4 receive the pins 21. A plate 28 is then slid over the shaft and up against the end face of the core of the brush which has just been assembled so that the pins 3| are received in the openings [4.

As many brushes B as are required for each assembly are added in this manner. After the last brush B has been assembled about the shaft, the other end collar is added and locked in position by the Allen setscrews 24.

Should any of the brushes B at any time become so worn or damaged that they should be replaced, all that is required is to loosen the setscrews 24 for one of the end collars to permit of a certain amount of axial movement on the part of the damaged brush and the brushes at one side thereof. The brushes are moved suificiently far to clear the pins 3| of the recesses 14 and the particular brush which is to be replaced. That brush, or one-half thereof, may then be taken out and replaced with a new one. The brushes and collars are then slid together in the manner above outlined and the end collar again locked in position.

M odiflcation A somewhat modified form of the invention is illustrated in Figure 7. In this form of the invention the plates 28 are dispensed with. Instead of using these plates, 2. pair of U-shaped holding elements 32 are employed for each end of each brush. Each holding element 32 has a pair of legs 33 which are received inthe openings 14 in the brush cores l2 and I 3. Thus, there is a holding element 32 at one side for two of the openings I4, one in the core member I2 and the other in the core member l3, and another element 32 is positioned in the pair of openings at the opposite side. Two of these elements 32 at each end of each brush is sufficient to maintain the brush halves assembled on the shaft In.

With several of, the brushesB assembled in end-to-end abutting relation it is of course impossible for these holding elements to become displaced. This relation of the brushes is maintained by employing a pair of the end collars l8 and I9 in the manner above outlined.

While preferred specific embodiments of the invention are hereinbefore set forth, it is to be clearly understood that the invention is not to be limited to the exact constructions, mechanisms and devices illustrated and described because various modifications of these details may be provided in putting the invention into practice within the purview of the appended claims.

What is claimed is:

1. In a brush assembly of the character described, the combination of a shaft, a pair of end collars mounted on said shaft in spaced relation, means forholding each of said end collars against longitudinal movement on said shaft, a plurality of brushesconfined between said end collars, each of said brushes consisting of bristles which outstand froma pair of complemental core halves, each of said corehalves having end faces formed with openings therein, a ring-like plate encom passing said shaft and arranged between adjacent ag arssos? 2; ma: briis'h assembly of thecharac'ter' de-" scribed, a shaft, an end collar fixedlymounted on said'shaft, pins-extending inwardly from the rangement to the pins on said end collar, the

openings-at one end of said brusl i slidably receiving' said pins on said end 'collar holding means at the other' end of saidbrush fixedly mounted on said shaft and; cooperating withthe openings in the end face thereat and with said end collar to confine said brush, and a key v I rotative relation between" sa'id'shaft andsaid brush.

3. In a brush assembly of the character described, a shaft, an end collar fixedly mounted on said shaft, pins extending inwardly from the end face of said collar, a brush comprising two complemental halves each having a core element the opposite end faces of which are formed with openings which correspond in number and arrangement to the pins on said end collar, the openings at one end of said brush slidably receiving said pins on said end collar, a ring-like plate disposed about said shaft, pins projecting outwardly from the face of said plate and slidably received in the openings in the core of said brush at the end remote from said end collar, holding means fixedly mounted on said shaft and cooperating with said end collar to confine said brush and plate on said shaft, and key means establishing a nonrotative relation between said brush andshaft.

4. In a brush assembly of the character described, a shaft formed with a keyway, a key in said keyway and projecting beyond the periphery of said shaft, a brush comprising bristles out standing from a pair of complemental core elements, each of said core elements being formed with a semicircular recess which receives said shaft and a notch at one end of said recess which receives said key, the opposite ends of said core elements being formed with openings, a member encircling andfixedly mounted on said shaft at opposite ends of said brush, each of said members being formed with a keyway accommodating said key, and pins projecting from said members and slidably received in said openings to maintain said brush assembled about said shaft.

5. In a brush assembly of the character described, a shaft formed with a keyway, a key in establishing a non-" witli a pairiof keyways-receiving said keys-, said collars b'ei'n'gmounte'd on said martin-spaced:

relation, releasable means carried by each collar for Iock'ing said-' collars against longitudinal movement on said shaftga plurality of pins car-' ried by the inner faceo'f each collarand which pins extend' in 'a direction axially of said shaft, 2; p'liirality of brushes between "said collar'sfeach" of said brushes comprisingbristles which extendoutwardly from a-pair of complementalcore 'elments, each or said coree'lements being formed with a semicircular recess which receives said shaftiand the ends of which terminate iii-notches which accommodate said keys, said core elements being' formedwfth op'enings'in thefoppo'site end faces thereof, the openings in the outer faces of the outermost brushes slidably receiving said pins on said end collars, and means cooperating with the openings at the other ends of said outermost brushes and with the openings in the other of said brushes to maintain said core elements assembled about said shaft.

7. In combination, a shaft formed with a pair of diametrically opposite keyways, a key in each of said keyways projecting beyond the periphery of said shaft, a pair of end collars each formed with a pair of keywaysreceiving said keys, said collars beingmounted on said shaft in spaced relation, releasable means carried by each collar for locking said collars against longitudinal movement on said shaft, a plurality of pins carried by the inner face of each collar and which pins extend in a'direction axially of said shaft,

- a plurality of brushes between said collars, each of said brushes comprising bristles which extend outwardly from a pair of complemental core elements, each of said core elements being formed with a semicircular recess which receives said shaft and the ends of which terminate in notches which accommodate said keys, said core elements being formed with openings in the opposite end faces thereof, the openings in the outer faces of the outermost brushes slidably receiving said pins on said end collars, and a ring-like plate assembled on said shaft between each pair of adjacent brush ends, each of said plates having pinsprojecting from the opposite faces thereof and which pins are slidably received in the openings in the end faces of the core elements of the adjacent said keyway and projecting beyond the periphery I elements being formed with openings, a pair of.

U-shaped holding members at each end of said brush with each holding member having a pair of legs which are slidably received in openings in said core elements, one leg of one holding memher being slidably received in an opening inone core element, and the other leg being slidably received in the opening of the other of said core elements, and a pair of end collars fixedly mounted on said shaft and confining said brush therebetween. I

6. In combination, a shaft formed with a pair of diametrically opposite keyways, a key in each of said keyways projecting beyond the periphery of said shaft, a pair of end collars each formed brush ends.

8. In a brush assembly, a shaft, a pair 01 brushes arranged in end to end relation with respect to each other and mounted on said shaft, each of said brushes comprising two complemental core halves formed with a plurality of spaced openings in their ends, a pair of end collars fixedly mounted on said shaft adjacent the outer ends of said brushes, a pluralityof pins extending from the face of said end collars adjacent said brushes and said pins being slidably received in said openings, a ring plate mounted on said shaft between the meeting ends of said brushes, and a plurality of pins extending from both faces of said ring plate and being slidably received in the adjacent openings in said core halves, and key means establishing a nonrotative relation between said brushes and said shaft.

9. In a brush assembly, a shaft, a pair of brushes arrangedin end to end relation with respect to each other and mounted on said shaft,

,each of said brushes comprising two complethe outer ends 01' said brushesya plurality of pins extending from the face of said end collars adjacent said brushes and said pins being slidably received in said openings, and two pairs of U-shaped holding elements at the meeting ends of said brushes and one pair of holding elements being positioned in one end of one brush and the other pair of holding elements being positioned in the adjacent end of the adjacent brush, each holding element having a pair or legs and one leg of one holding element being slidably received in an opening in one core half of one brush and the other leg being slidably received in an opening in the other core half of the same brush, and key means establishing a 15 nonrotative relation between said brushes and said shaft.

LOUIS J. MUNDO.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,576350 Nielsen Mar. 9, 1926 1,975,567 Dossmann Oct. 2, 1934 2,205,195 Hammond et a1. June 18, 1940 FOREIGN PATENTS Number Country Date 569,721 Germany Feb. '1, 1933 

